AU2019280360A1 - Tropomyosin receptor kinase inhibitor, preparation method therefor and use thereof - Google Patents
Tropomyosin receptor kinase inhibitor, preparation method therefor and use thereof Download PDFInfo
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- AU2019280360A1 AU2019280360A1 AU2019280360A AU2019280360A AU2019280360A1 AU 2019280360 A1 AU2019280360 A1 AU 2019280360A1 AU 2019280360 A AU2019280360 A AU 2019280360A AU 2019280360 A AU2019280360 A AU 2019280360A AU 2019280360 A1 AU2019280360 A1 AU 2019280360A1
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- 230000009422 growth inhibiting effect Effects 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
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- 208000027866 inflammatory disease Diseases 0.000 description 1
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- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000001294 liquid chromatography-tandem mass spectrometry Methods 0.000 description 1
- 201000005249 lung adenocarcinoma Diseases 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009401 metastasis Effects 0.000 description 1
- HNQIVZYLYMDVSB-UHFFFAOYSA-N methanesulfonimidic acid Chemical compound CS(N)(=O)=O HNQIVZYLYMDVSB-UHFFFAOYSA-N 0.000 description 1
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 125000002911 monocyclic heterocycle group Chemical group 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- WOOWBQQQJXZGIE-UHFFFAOYSA-N n-ethyl-n-propan-2-ylpropan-2-amine Chemical compound CCN(C(C)C)C(C)C.CCN(C(C)C)C(C)C WOOWBQQQJXZGIE-UHFFFAOYSA-N 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 208000004296 neuralgia Diseases 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 230000004031 neuronal differentiation Effects 0.000 description 1
- 230000006576 neuronal survival Effects 0.000 description 1
- 208000021722 neuropathic pain Diseases 0.000 description 1
- 239000003900 neurotrophic factor Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002018 overexpression Effects 0.000 description 1
- SJGALSBBFTYSBA-UHFFFAOYSA-N oxaziridine Chemical compound C1NO1 SJGALSBBFTYSBA-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 108091008765 peroxisome proliferator-activated receptors β/δ Proteins 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 230000026731 phosphorylation Effects 0.000 description 1
- 238000006366 phosphorylation reaction Methods 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229940002612 prodrug Drugs 0.000 description 1
- 239000000651 prodrug Substances 0.000 description 1
- 125000000719 pyrrolidinyl group Chemical group 0.000 description 1
- 108091008598 receptor tyrosine kinases Proteins 0.000 description 1
- 102000027426 receptor tyrosine kinases Human genes 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000002390 rotary evaporation Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- RBWSWDPRDBEWCR-RKJRWTFHSA-N sodium;(2r)-2-[(2r)-3,4-dihydroxy-5-oxo-2h-furan-2-yl]-2-hydroxyethanolate Chemical compound [Na+].[O-]C[C@@H](O)[C@H]1OC(=O)C(O)=C1O RBWSWDPRDBEWCR-RKJRWTFHSA-N 0.000 description 1
- 210000003594 spinal ganglia Anatomy 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 1
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- 230000004083 survival effect Effects 0.000 description 1
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- 229960000351 terfenadine Drugs 0.000 description 1
- IKODRLGZQIEITN-GFCCVEGCSA-N tert-butyl (2r)-2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidine-1-carboxylate Chemical compound COC1=NC=C(F)C=C1[C@@H]1N(C(=O)OC(C)(C)C)CCC1 IKODRLGZQIEITN-GFCCVEGCSA-N 0.000 description 1
- LPQZERIRKRYGGM-UHFFFAOYSA-N tert-butyl pyrrolidine-1-carboxylate Chemical compound CC(C)(C)OC(=O)N1CCCC1 LPQZERIRKRYGGM-UHFFFAOYSA-N 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- DPKBAXPHAYBPRL-UHFFFAOYSA-M tetrabutylazanium;iodide Chemical compound [I-].CCCC[N+](CCCC)(CCCC)CCCC DPKBAXPHAYBPRL-UHFFFAOYSA-M 0.000 description 1
- WHRNULOCNSKMGB-UHFFFAOYSA-N tetrahydrofuran thf Chemical compound C1CCOC1.C1CCOC1 WHRNULOCNSKMGB-UHFFFAOYSA-N 0.000 description 1
- 125000001412 tetrahydropyranyl group Chemical group 0.000 description 1
- 125000004568 thiomorpholinyl group Chemical group 0.000 description 1
- 208000030045 thyroid gland papillary carcinoma Diseases 0.000 description 1
- 229960005371 tolbutamide Drugs 0.000 description 1
- 230000009261 transgenic effect Effects 0.000 description 1
- QIWRFOJWQSSRJZ-UHFFFAOYSA-N tributyl(ethenyl)stannane Chemical compound CCCC[Sn](CCCC)(CCCC)C=C QIWRFOJWQSSRJZ-UHFFFAOYSA-N 0.000 description 1
- IHIXIJGXTJIKRB-UHFFFAOYSA-N trisodium vanadate Chemical compound [Na+].[Na+].[Na+].[O-][V]([O-])([O-])=O IHIXIJGXTJIKRB-UHFFFAOYSA-N 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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Classifications
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/22—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed systems contains four or more hetero rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
- A61K31/4375—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a six-membered ring having nitrogen as a ring heteroatom, e.g. quinolizines, naphthyridines, berberine, vincamine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
- A61K31/5365—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines ortho- or peri-condensed with heterocyclic ring systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
- A61K31/5375—1,4-Oxazines, e.g. morpholine
- A61K31/5383—1,4-Oxazines, e.g. morpholine ortho- or peri-condensed with heterocyclic ring systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P35/02—Antineoplastic agents specific for leukemia
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/22—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains four or more hetero rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
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- Nitrogen Condensed Heterocyclic Rings (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
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- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
Disclosed in the present invention are a pyrazolo[1,5-a]pyrimidine derivative having a structure of formula (I), a pharmaceutical composition comprising the compound of formula (I), and use of the compound in the preparation of a medicament for preventing or treating diseases associated with tropomyosin receptor kinases, in particular for preventing or treating cancers associated with tropomyosin receptor kinases. Each substituent in formula (I) has the same definition as that in the description.
Description
TROPOMYOSIN RECEPTOR KINASE INHIBITOR, PREPERATION METHOD THEREOF AND USE THEREOF FIELD OF THE INVENTION The present application relates to the field of medicine, and in particular relates to pyrazolo[1,5-a]pyrimidine derivatives and uses thereof for the treatment of diseases associated with pain, cancer and inflammation. This application claims the priority of Chinese patent CN201810597223.9 (filed on June 8, 2018, entitled TROPOMYOSIN RECEPTOR KINASE INHIBITOR, PREPERATION METHOD THEREOF AND USE THEREOF). BACKGROUND OF THE INVENTION Tropomyosin receptor kinases (Trks) are a family of receptor tyrosine kinases that can regulate synaptic strength and plasticity in the mammalian nervous system. The activation of Trk receptors affects neuronal survival and differentiation through various signaling pathways, and also has significant effects on the function of neurons. The common ligands for Trk receptors are neurotrophins, which play a key role in the nervous system, and the respective binding between these molecules is highly specific (J. Mol. Biol. 1999, 90, 149). Each type of neurotrophin has a corresponding Trk receptor with different affinity. Binding leads to activation of the Trk receptor by dimerization and phosphorylation, causing activation of downstream signals including RAS/MAPK/ERK, PLCy and PI3K/Akt pathways etc., and thus regulation of survival and other functions of cells (Cancers 2018, 10, 105). Inhibitors in the Trk/neurotrophin pathways have been proven effective in many preclinical animal models of pain. For example, the antibody RN-624 that antagonizes nerve growth factors NGF and TrkA has been shown effective in animal models of inflammatory pain and neuropathic pain (Neuroscience 1994, 62, 327; Eur. J. Neurosci. 1999, 11, 837). In addition, some literature indicates that after inflammation, the level of brain-derived neurotrophic factor (BDNF) and TrkB signaling in the dorsal root ganglion increase (Brain Research 1997, 749, 358). Multiple studies have shown that inhibition of the BDNF/TrkB pathway and reduction of signal transduction by antibodies can slow down neuroticism and associated pain (Molecular Pain 2008, 4, 27). At present, a variety of small molecule inhibitors of Trk kinases have been shown to be useful in the treatment of pain (Expert Opin. Ther. Patents 2009, 19, 305). In addition, the use of anti-NGF antibodies or small molecule inhibitors of TrkA, B, and C to block the neurotrophic factor/Trk pathway has been shown to be effective in preclinical models of inflammatory diseases, such as inflammatory lung diseases, including asthma
(Pharmacology & Therapeutics 2008, 117, 52), interstitial cystitis (The Journal of Urology 2005, 173, 1016), inflammatory bowel disease (including ulcerative colitis and Crohn's disease (Gut2000, 46, 670)), inflammatory skin disease and the like (Archives of Dermatological Research 2006, 298, 31), eczema and psoriasis (J. Investigative Dermatology 2004, 122, 812), etc. Literature reports also show that over-expression, activation, amplification or mutation of Trk kinases is closely associated with many cancers, including neuroblastoma, ovarian cancer, glioblastoma, lung adenocarcinoma, juvenile sarcoma, colorectal cancer, fibrosarcoma, Spitzoid melanoma, thyroid cancer, intrahepatic cholangiocarcinoma, large cell neuroendocrine carcinoma, papillary thyroid cancer, pilocytic astrocytoma, head and neck squamous cell carcinoma, acute myeloid leukemia, congenital mesoblastic nephroma, ductal adenocarcinoma, gastrointestinal stromal tumor, mammary analogue secretory carcinoma (Cancers 2018, 10, 105), etc. In preclinical models of cancer, small molecule inhibitors of TrkA, B, and C effectively inhibit tumor growth and prevent tumor metastasis (Cancer Letters 2001, 169, 107; Leukemia 2007, 1-10; Cancer Letters 2006, 232, 90; Cancer Res .2008, 68, 346). SUMMARY OF THE INVENTION One object of the present invention is to provide a pyrazolo[1,5-a]pyrimidine Trk inhibitor. Another object of the present invention is to provide the use of the Trk inhibitor in the preparation of a medicament for preventing or treating diseases associated with tropomyosin receptor kinases. To achieve the objects of the present invention, the technical solutions of the present invention are as follows: A compound represented by the following formula (I), stereoisomer thereof or pharmaceutically acceptable salt thereof according to the present invention:
R2 R4 X N'.RN / H0 3 R HN N N / N-N
(I) R' is selected from H, Ci-C8 alkyl, C3-C cycloalkyl, C2-C alkenyl, C2-C8 alkynyl, -COR ,
-S0 2 R 5 or -SOR 5, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR6 R', -NR 6COR7 , -COR7 , -S0 2 R7 , -SOR7
, Ci-C8 alkyl,C3-C8 cycloalkyl, Ci-C8 alkoxyl, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C alkyl,C3-C cycloalkyl,C2-C alkenyl orC2-C8 alkynyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR 6 R8 , -NR 6COR', -COR', -S0 2 R5
, -SOR 5, Ci-C8 alkyl,C3-C8 cycloalkyl, Ci-C8 alkoxyl, or a 4-10 membered heterocyclic group; R 5 and R7 are each independently selected from H, Ci-C8 alkyl,C3-Ccycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl, orC3-C cycloalkyl; Y is -(CH 2)n-or -O(CH2)n-; n is selected from 0, 1, 2 or 3; alternatively, any two of R, R2 and R4can independently form aC3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is selected from H, deuterium, halogen, cyano, nitro, C-C8 alkyl,C3-C8 cycloalkyl, or CI-C8 alkoxy; and X is selected from CH or N. An embodiment of the present invention is a compound of general formula (II), stereoisomer thereof or pharmaceutically acceptable salt thereof:
R2 R1 x N 0 IHN R3 N N- N'N
R' is selected from H, Ci-C8 alkyl,C3-Ccycloalkyl,C2-C alkenyl,C2-C8 alkynyl, -COR ,
-S0 2 R 5 or -SOR 5 , and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR6 R8 , -NR 6COR7 , -COR7 , -S0 2 R7 , -SOR7 ,
Ci-C8 alkyl,C3-C8 cycloalkyl, Ci-C8 alkoxyl, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C alkyl,C3-C cycloalkyl,C2-C alkenyl orC2-C8 alkynyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR 6 R8 , -NR 6COR5 , -COR5 , -S0 2 R5 ,
-SOR 5 , Ci-C8 alkyl,C3-C8 cycloalkyl, Ci-C8 alkoxyl, or a 4-10 membered heterocyclic group; R5 and R7 are each independently selected from H, Ci-C8 alkyl,C3-Ccycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl, orC3-C cycloalkyl; alternatively, any two of R, R2 and R4can independently form aC3-C cycloalkyl group or a 4-10 membered heterocyclic group;
R3 is selected from H, deuterium, halogen, cyano, nitro, C-C alkyl, C3-C8 cycloalkyl, or
CI-C8 alkoxy; and X is selected from CH or N. The embodiment of the present invention, wherein: R' is selected from H, Ci-C alkyl, C3-C8 cycloalkyl, C2-C8 alkenyl or C2-C8 alkynyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -NR6 R8 , -NR 6COR 7 , -COR7 , -S0 2 R7 , -SOR 7 , Ci-C8 alkyl, C3-C8 cycloalkyl, CI-C8 alkoxy, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C alkyl, C3-C cycloalkyl, C2-C alkenyl or C2-C8 alkynyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -NR6 R8 , -NR6 COR', -COR', -S0 2 R5
, -SOR 5, Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R5 and R 7 are each independently selected from H, Ci-C8 alkyl, C3-C cycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is halogen; and X is selected from CH or N.
The embodiment of the present invention, wherein: R' is selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted 6 R with one or more selected from deuterium, halogen, hydroxyl, cyano, -NR 8 , -NR6 COR7
, -COR 7, -S02 R7, -SOR 7 , Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -NR6 R8 , -NR 6COR 5 , -COR5 , -S0 2 R5 , -SOR5 , Ci-C8 alkyl, C3-C8 cycloalkyl, CI-C8 alkoxy, or a 4-10 membered heterocyclic group; R5 and R 7 are each independently selected from H, Ci-C8 alkyl, C3-C cycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl or C3-C cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is halogen; and
X is selected from CH or N. The embodiment of the present invention, wherein: R' is selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -S 2 R7
, C 1-C 4 alkyl, C3-C 6 cycloalkyl or C1 -C 4 alkoxy; R7 is selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; R2 and R4 are each independently selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, C1 -C 4 alkyl, C3-C6 cycloalkyl, or C1 -C 4 alkoxy; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is halogen; and X is CH or N. The embodiment of the present invention, wherein: R' is selected from H, Ci-C8 alkyl, or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, hydroxyl, halogen, -S0 2 R 7 , or C1-C4 alkoxy; R7 is selected from H or Ci-C8 alkyl; R2 and R4 are each independently selected from H, CI-C8 alkyl, or C3-C8 cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a 4-10 membered heterocyclic group; R3 is fluorine or chlorine; and X is selected from CH or N. The embodiment of the present invention, wherein: R' is selected from H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl, and optionally further substituted with one or more substituents selected from deuterium, hydroxyl, F, Cl, -SO 2 CH 3 , or methoxy; R2 and R4 are each independently selected from H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl; alternatively, any two of R, R2 and R4 can independently form a morpholinyl; R3 is fluorine or chlorine; and X is selected from CH or N. In a preferred embodiment of the present invention, the compound, stereoisomer thereof or pharmaceutically acceptable salt thereof is selected from the following structures:
N NN N N HN I NI" N 0
N (R AN N 0 N N N0 N
N N N NF RJ '' 0 0HN N N HN
(N 0 (R) o 0, HN HNH/\_H F- N- F N- F- - N
0 ~ N N HN N oS! N (R) N 0 F - ~ /F HN N F HN N 'N /
00 D D
(S)~ 0)N HN F 'H F (RJH HN N "N DO HN N/, N-N N/ N A NNN NN
DD DX D D D 0? /D\D4D N SN N 0 N 0 oR!~ " HN
0 N I(RJ H N l HN- \ N 0
Fj N N-N F N -N F N-N HHN0 F NY -iAN F o NN \7 N /N-N F NJ N-N
and more preferably, selected from the following structures:
'N 0 N N SNHIN F -F -F HIN 0
_N N N N N 0R)
0"HNH 0 HN 0 F -F -F
N N N / tN NN N /N-N N N
N N 0
FNI kN N ' NN
The compound of formula (I), stereoisomer thereof or pharmaceutically acceptable salt thereof according to the present invention is a novel Trk inhibitor, and thus can be used to prepare a medicament for preventing or treating diseases associated with tropomyosin receptor kinases, including but not limited to pain, cancer, and inflammation. The present invention further provides the use of the compound of formula (I), stereoisomer thereof or pharmaceutically acceptable salt thereof for preventing or treating cancer. As a further preferred solution, the cancer includes neuroblastoma, ovarian cancer, cervical cancer, colorectal cancer, breast cancer, pancreatic cancer, glioma, glioblastoma, melanoma, prostate cancer, leukemia, lymphoma, non-Hodgkin's lymphoma, gastric cancer, lung cancer, hepatocellular carcinoma, gastrointestinal stromal tumor, thyroid cancer, cholangiocarcinoma, endometrial cancer, renal cancer, anaplastic large cell lymphoma, acute myelocytic leukemia, multiple myeloma, melanoma or mesothelioma, juvenile sarcoma, fibrosarcoma, large cell neuroendocrine carcinoma, pilocytic astrocytoma, head and neck squamous cell carcinoma, congenital mesoblastic nephroma, ductal adenocarcinoma, mammary analogue secretory carcinoma, and appendix cancer. Another aspect of the present invention provides a pharmaceutical composition comprising a therapeutically effective dose of the compound of formula (I), stereoisomer thereof or pharmaceutically acceptable salt thereof as described above, and a pharmaceutically acceptable carrier. Another aspect of the present invention provides use of the pharmaceutical composition in the preparation of a medicament for preventing or treating cancer. Detailed description: Unless stated to the contrary, the following terms used in the description and claims have the following meanings. In the present invention, "C1-C8 alkyl" refers to a linear alkyl group and a branched alkyl group including 1 to 8 carbon atoms. The alkyl group refers to a saturated aliphatic hydrocarbon group, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, n-pentyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, 1-ethylpropyl, 2-methylbutyl, 3-methylbutyl, n-hexyl, 1-ethyl-2-methylpropyl, 1,1,2-trimethylpropyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 2,2-dimethylbutyl, 1,3-dimethylbutyl, 2-ethylbutyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 2,3-dimethylbutyl, n-heptyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 2,3-dimethylpentyl, 2,4-dimethylpentyl, 2,2-dimethylpentyl, 3,3-dimethylpentyl, 2-ethylpentyl, 3-ethylpentyl, n-octyl, 2,3-dimethylhexyl, 2,4-dimethylhexyl, 2,5-dimethylhexyl,2,2-dimethylhexyl, 3,3-dimethylhexyl, 4,4-dimethylhexyl,2-ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 2-methyl-2-ethylpentyl, 2-methyl-3-ethylpentyl, or various branched isomers thereof, etc.
In the present invention, "cycloalkyl" refers to a saturated monocyclic hydrocarbon substituent, and "C3-C8cycloalkyl" refers to a monocyclic cycloalkyl including 3 to 8 carbon atoms, and for example, non-limiting examples of the monocyclic cycloalkyl include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, etc.; "C3-C6 cycloalkyl" refers to a monocyclic cycloalkyl group including 3 to 6 carbon atoms, and for example, non-limiting examples of the monocyclic cycloalkyl include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, etc. In the present invention, "alkenyl" refers to an alkyl group as defined above consisting of at least two carbon atoms and at least one carbon-carbon double bond, and "C2-C alkenyl" refers to a linear or branched alkenyl containing 2-8 carbon atoms. For example, vinyl, 1-propenyl, 2-propenyl, 1-, 2- or 3-butenyl and the like. In the present invention, "alkynyl" refers to an alkyl group as defined above consisting of at least two carbon atoms and at least one carbon-carbon triple bond, and "C2-C8 alkynyl" refers to a linear or branched alkynyl containing 2-8 carbon atoms. For example, ethynyl, 1-propynyl, 2-propynyl, 1-, 2- or 3-butynyl and the like. In the present invention, a "heterocyclic group" refers to a saturated or partially unsaturated monocyclic or polycyclic cyclic hydrocarbon substituent, wherein one or more ring atoms are heteroatoms selected from nitrogen, oxygen, or S(O)r (where r is an integer of 0, 1, or 2), excluding -00-, -OS- or -SS- ring moiety, the remaining ring atoms being carbon atoms. A "4-10 membered heterocyclic group" refers to a cyclic group containing 4 to 10 ring atoms. Non-limiting examples of the monocyclic heterocyclic group include tetrahydropyranyl, dihydropyranyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl, homopiperazinyl and the like. A polycyclic heterocyclic group includes spiro, fused and bridged heterocyclic groups. In the present invention, "alkoxy" refers to -O-(alkyl), wherein the alkyl is as defined above. "Ci-C8 alkoxy" refers to an alkoxy group containing 1-8 carbon atoms, and non-limiting examples thereof include methoxy, ethoxy, propoxy, butoxy and the like. "Halogen" refers to fluorine, chlorine, bromine, or iodine. A "pharmaceutical composition" means a mixture containing one or more compounds described herein or physiologically acceptable salts or prodrugs thereof with other chemical components, as well as other components such as physiologically acceptable carriers and excipients. The purpose of the pharmaceutical composition is to promote the administration to an organism and facilitate the absorption of an active ingredient to exert its biological activity. In the preparation steps of the present invention, the abbreviations of the reagents used respectively indicate: MTBE methyl tert-butyl ether Sec-BuLi sec-butyl lithium THF tetrahydrofuran Pd2(dba)3 tris(dibenzylideneacetone)dipalladium t-Bu3P-HBF4 tri-n-butylphosphonium tetrafluoroborate Hexane n-hexane EA ethyl acetate DCM dichloromethane DIEA N,N-diisopropylethylamine DMF N,N-dimethylformamide TEA triethylamine (Ph3P)2PdCl2 bis(triphenylphosphine)palladium dichloride HOBt 1-hydroxybenzotriazole EDCI 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is the 1H NMR spectrum of a compound of Example 1; Figure 2 is the 1H NMR spectrum of a compound of Example 2; Figure 3 is the 1H NMR spectrum of a compound of Example 3a; Figure 4 is the 1H NMR spectrum of a compound of Example 3b; Figure 5 is the 1H NMR spectrum of a compound of Example 4; Figure 6 is the 1H NMR spectrum of a compound of Example 5; Figure 7 is the 1H NMR spectrum of a compound of Example 6; Figure 8 is the 1H NMR spectrum of a compound of Example 7a; Figure 9 is the 1H NMR spectrum of a compound of Example 7b; Figure 10 is the 1H NMR spectrum of a compound of Example 8a; Figure 11 is the 1H NMR spectrum of a compound of Example 8b; Figure 12 is the 1H NMR spectrum of a compound of Example 9; and Figure 13 is the 1H NMR spectrum of a compound of Example 10. DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to specific examples. Those skilled in the art can understand that these examples are only used for illustrating the present invention and are not intended to limit the scope of the present invention in any way. The experimental methods in the examples below are conventional methods, unless otherwise specified. Medicinal raw materials and reagent materials used in the examples below are commercially available products, unless specifically stated. Example 1 (R,I 3E,14 E)-6-cyclopropyl-3 5-fluoro-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3, 2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
Step 1: Synthesis of (R)-tert-butyl 2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidine-1-carb oxylate
F Br Boc Pd(OAc)2 t-Bup-HBF4 ZnCl2 F N + N (-)-Sparteine Sec-BuLi MTBE N c
-78°C-r.t.
At room temperature, tert-butyl pyrrolidine-1-carboxylate (2.86 mL, 16.03 mmol), (-)-Sparteine (4.50 g, 19.20 mmol) and MTBE (35.0 mL) were added into a 250 mL three-necked flask. The atmosphere in the flask was replaced with nitrogen for three times, and the temperature was lowered slowly to -78°C. Sec-BuLi (17.01 mL, 21.70 mmol, 1.3N in cyclohexane) was added dropwise after the temperature was stabilized, and stirred at -75°C for 3 hours. ZnCl2 (14.68 mL, 14.36 mmol, 1 N in THF) was slowly added dropwise at -65°C, and stirred for 20 minutes after the temperature was lowered to around -78°C. The temperature was increased to room temperature, and under the protection of nitrogen, 3-bromo-5-fluoro-2-methoxypyridine (3.44 g, 16.70 mmol), Pd(OAc) 2 (0.18 g, 0.84 mmol), and t-Bu 3P-HBF4 (0.28 g, 1.00 mmol) were sequentially added. After the addition was completed, the reaction was carried out at room temperature for 16 hours. 1.50 mL ammonia water was added dropwise to the reaction system and stirred at room temperature for 1 hour. The reaction solution was filtered through celite, washed with MTBE (20 mL x 3), and separated. The organic phase was concentrated and subjected to column chromatography (Hexane: EA = 20:1). After concentration under reduced pressure, 2.60 g of a yellow oil was
obtained, with a yield of 52.53%. 1 H NMR (400 MHz, Chloroform-d) 6 7.84 (d, J= 7.2 Hz, 1H),
7.09 (dd, J= 29.5, 6.1 Hz, 1H), 4.99 (dd, J= 52.8, 8.0 Hz, 1H), 3.93 (s, 3H), 3.53 (m, 2H), 2.28 (m, 1H), 1.82 (m, 3H), 1.46 (s, 9H). Step 2: Synthesis of (R)-5-fluoro-2-methoxy-3-(pyrrolidin-2-yl)pyridine
F ~ N iTA F N IH N 0 N 0 F F
At room temperature, (R)-tert-butyl 2-(5-fluoro-2-methoxypyridin-3 -yl)pyrrolidine-1I-car boxylate (2.60 g, 8.77 mmol), trifluoroacetic acid (7.80 mL) and dichloromethane (7.80 mL) were sequentially added into a 100 mL single-necked flask, and stirred at room temperature fo r 1.5 hours. After the raw materials were completely reacted, the reaction was stopped. The re action solution was evaporated to dryness under reduced pressure to obtain a yellow oil of 3.9 4 g, which was directly used in the next reaction step. Step 3: Synthesis of (R)-ethyl 5-(2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidin-1-yl)pyra zolo[1,5-a]pyrimidine-3-carboxylate
CF 9 N C-O
F NN D N c-c I _N At room temperature, (R)-5-fluoro-2-methoxy-3-(pyrrolidin-2-yl)pyridine (1.72 g, 8.78 mmol), ethyl 5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate (2.38 g, 10.54 mmol), DIEA (5.25 g, 40.65 mmol), and DMF (19.30 mL) were added into a 30 mL microwave sealed tube, slowly warmed to 90°C, and reacted with stirring for 15.5 h. After the reaction was cooled, it was dissolved and dispersed by adding EA (100 mL), washed by adding water (100 mL), and separated. The organic phase was washed sequentially with saturated brine (100 mL) and a saturated aqueous solution of sodium bicarbonate (100 mL), dried over anhydrous sodium sulfate, and evaporated to dryness under reduced pressure. Column chromatography (PE: EA = 1:1) was performed to obtain a yellow solid of 1.83 g. MS (ESI) m/z: 386[M+H]*. 1 H NMR
(400 MHz, Chloroform-d) 6 8.28 (s, 1H), 8.15 (dJ= 5.2 Hz, 1H), 7.91 (s, 1H), 7.04 (d, J= 7.2
Hz, 1H), 5.84 (d, J= 4.5 Hz, 1H), 5.09 (m, 1H), 4.37 (m, 2H), 4.18 - 4.11 (m, 1H), 4.02 (s, 3H), 3.96 (m, 1H), 2.47 (m, 1H), 2.04 (m, 2H), 1.95 (m, 1H), 1.42 (m, 3H). Step 4: Synthesis of (R)-ethyl 5-(2-(5-fluoro-2-hydroxypyridin-3-yl)pyrrolidin-1-yl)pyra zolo[1,5-a]pyrimidine-3-carboxylate
F N F N I ~ .NC-Q HBr/AcOH -N C-Q N N90C N H
Atroomtemperature,(R)-ethyl5-(2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidin-1-yl)py razolo[1,5-a]pyrimidine-3-carboxylate (1.83 g, 4.75 mmol), HBr (18.30 mL, 33% in AcOH) were added into a 100 mL single-necked flask, slowly warmed to 90°C, and reacted with stirri ng for 4.5 hours. The reaction was dissolved and dispersed by adding EA (100 mL), washed b y adding water (100 mL), and separated. The organic phase was washed sequentially with a sa turated NaHCO3 solution (100 mL) and saturated brine (100 mL), dried over anhydrous sodiu m sulfate, and evaporated to dryness under reduced pressure. Column chromatography (DCM: EtOH = 20:1) was performed to obtain a yellow solid of 1.34 g. MS (ESI) m/z: 372[M+H]*. 1 H NMR (400 MHz, Chloroform-d) 6 12.92 (br, 1H), 8.29 (s, 1H), 8.21 (d, J= 7.5 Hz, 1H), 7.3 (s, 1H), 7.17 (s, 1H), 6.93 (d, J= 4.7 Hz, 1H), 5.13 (m, 1H), 4.37 (q, J= 8.7 Hz, 2H), 4.16 (m, 1H), 3.95 (m, 1H), 2.49 (m, 1H), 2.13-2.07 (m, 2H), 1.95 (m, 1H), 1.42 (t, J=8.8 Hz, 3H). Step 5: Synthesis of (R)-ethyl 5-(2-(5-fluoro-2-(trifluoromethyl-sulfonyloxy)pyridin-3-yl) pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate s
F 0 F N I 0 r TEA N OH N OTN
At room temperature, (R)-ethyl 5-(2-(5-fluoro-2-hydroxypyridin-3-yl)pyrrolidin-1-yl)pyr azolo[1,5-a]pyrimidine-3-carboxylate (1.34 g, 3.61 mmol) and DMF (13.0 mL) were added in to a 100 mL single-necked flask, and ultrasonically dispersed to be completely dissolved. 1,1, 1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methylsulfonamide (1.42 g, 3.97 mmol) an d TEA (0.44 g, 4.33 mmol) were sequentially added to the reaction system and reacted with st irring at room temperature for 24 hours. EA (110 mL) was added to the reaction system. The r eaction system was washed sequentially with a saturated NaHCO 3 solution (100 mL), water (1 mL) and saturated brine (100 mL), dried over anhydrous sodium sulfate, and evaporated to dryness under reduced pressure. Column chromatography (PE: EA=1:1) was performed to obt ain a foamy white solid of 1.60 g. MS (ESI) m/z: 504.0[M+H]*. 1 H NMR (400 MHz, DMSO d6 ) 8.78 (d, J= 7.8 Hz, 1H), 8.37 (s, 1H), 8.17 (s, 1H), 7.93 (d, J=8.8 Hz, 1H), 6.69 (d, J= 7.8 Hz, 1H), 5.37 (m, 1H), 4.08 (m, 1H), 4.04 (q, J= 7.2 Hz, 2H), 3.65 (m, 1H), 2.08 (m, 3H), 1.91 (m, 1H), 1.11 (t, J= 7.2 Hz, 3H). Step 6: Synthesis of ethyl (S)-5-(2-(5-fluoro-2-vinylpyridin-3-yl)pyrrolidin-1-yl)pyrazol o[1,5-a]pyrimidine-3-carboxylate
OT NUCI ( PdCl2 N N F
At room temperature, (R)-ethyl 5-(2-(5-fluoro-2-(trifluoromethyl-sulfonyloxy)pyridin-3 yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (1.75 g, 3.47 mmol), tributyl(viny l)tin (1.73 g, 5.21 mmol), lithium chloride (0.74 g, 17.38 mmol), (Ph 3P) 2PdCl2 (0.24 g, 0.34 m mol), and DMF (35.0 mL) were sequentially added into a 100 mL single-necked flask, replace d with nitrogen for three times, slowly warmed to 80°C, and reacted with stirring for for 4 hou rs. The reaction solution was cooled to room temperature, sequentially washed with a saturate d NaHCO 3 solution (100 mL), water (100 mL) and saturated brine (100 mL), dried over anhyd rous sodium sulfate, and evaporated to dryness under reduced pressure. Column chromatograp hy (PE: EA = 1:1) was performed to obtain a white solid of 1.23 g. MS (ESI) m/z: 382.0[M+H] +. 1H NMR (400 MHz, Chloroform-d) ( 8.36 (s, 1H), 8.29 (s, 1H), 8.16 (br, 1H), 7.05 (br, 2H), 6.42 (d, J= 16.8 Hz, 1H), 5.81 - 5.53 (m, 2H), 5.20 (m, 1H), 4.36 (m, 2H), 4.11 (q, J= 7.2 Hz, 2H), 2.58 (m, 1H), 2.07 (m, 3H), 1.26 (t, J= 7.2 Hz, 3H). Step 7: Synthesis of ethyl (S)-5-(2-(2-(2-(cyclopropylamino)ethyl)-5-fluoropyridin-3-yl) pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate
SN -NH 2 N N
NN, AcOH \ NrH ~N < N F F
At room temperature, ethyl (S)-5-(2-(5-fluoro-2-vinylpyridin-3-yl)pyrrolidin-1-yl)pyrazo lo[1,5 -a]pyrimidine-3-carboxylate (1.23 g, 3.22 mmol), cyclopropylamine (5.52 g, 96.75 mm ol), glacial acetic acid (5.81 g, 96.75 mmol), and ethanol (12.30 mL) were added into a 100 m L single-necked flask. Under the protection of nitrogen, the temperature was slowly increased to 75°C, and the reaction was carried out under reflux for 20.5 hours. The reaction solution wa s cooled to room temperature, adjusted to a neutral pH with a saturated aqueous solution of so dium carbonate, and extracted by adding EA (150 mL). The organic phase was dried over anh ydrous sodium sulfate, and evaporated to dryness under reduced pressure. Column chromatogr aphy (DCM: EtOH=25:1) was performed to obtain a yellow solid of 378.2 mg, with 605.4 mg of the raw materials recovered. The above operations were carried out again on the recovered raw materials, and the products were combined to obtain a yellow solid of 507.2 mg. MS (ESI) m/z: 439.0[M+H]*. Step 8: Synthesis of ethyl (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazino) ethyl)-5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate
.0" 0 'BOC 0 0 S'H
NF N_ BSoc N NlrH-\ NMMN HN h Vh F F Boo
At room temperature, ethyl (S)-5-(2-(2-(2-(cyclopropylamino)ethyl)-5-fluoropyridin-3-yl) pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (0.20 g, 0.45 mmol) and tetrahydrof uran (4.0 mL) were added into a 10 mL single-necked flask, ultrasonically dissolved, and cool ed to 0°C. N-Boc-O-p-toluenesulfonyl-hydroxylamine (131.0 mg, 0.45 mmol) and N-methyl morpholine (22.5 mg, 0.23 mmol) were added. The reaction solution was returned to room te mperature and allowed to react with stirring overnight. The reaction solution was diluted with dichloromethane (40 mL), washed with a saturated aqueous solution of sodium bicarbonate (3 mL), and extracted with dichloromethane (40 mL x 3). The organic phase was dried over a nhydrous Na2SO4, and evaporated to dryness under reduced pressure. Column chromatograph y (PE: EA=1:1) was performed to obtain a yellow solid of 100.0 mg. MS (ESI) m/z: 554.0[M+ H]*. Step9:Synthesisof(S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazino)ethyl) -5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylicacid
0 -- 1 -0OH IN L N N LiOH N ~ NEtOH N
Atroomtemperature,ethyl(S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazin o)ethyl)-5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate(85.0 mg, 0.15 mmol) and ethanol (3.0 mL) were added into a 10 mL single-necked flask, and stirre d. After complete dissolution, lithium hydroxide monohydrate (38.6 mg, 0.92 mmol, dissolve d in 0.5 mL water) was added, the temperature was slowly increased to 70°C, and the reaction was carried out with stirring for 15 hours. The reaction solvent was evaporated to dryness und er reduced pressure at 40°C to obtain a crude product as a yellow solid. MS(ESI)m/z: 526.0[M
+H]*.
Step 10: Synthesis of (R,1 3 E,1 4 E)-6-cyclopropyl-3-fluoro-6,7-diazepine-1(5,3)-pyrazolo
[1,5-a]pyrimidine-3(3, 2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
N N, NH2 TFA / N TFA
At room temperature, the crude product from the above step was added into a 10 mL single-necked flask, followed by addition of methylene chloride (1.0 mL) and trifluoroacetic acid (1.0 mL), ultrasonically dispersed, and reacted with stirring for 2 hours. The reaction solvent was evaporated to dryness under reduced pressure at 40°C to obtain a yellow oil, which was further suctioned by an oil pump at room temperature for 4 hours to obtain a pale yellow crude product 1. MS(ESI) m/z: 426.0[M+H]*. At room temperature, the above crude product 1 was placed into a 10 mL single-necked flask, followed by addition of HOBt (103.7 mg, 0.77 mmol), EDCI (310.7 mg, 0.77 mmol) and DMF (4.0 mL), and ultrasonically dispersed. TEA (310.7 mg, 3.07 mmol) was added. Under the protection of nitrogen, the reaction was carried out overnight at room temperature. The reaction solution was evaporated to dryness under reduced pressure and the product was purified by reverse column chromatography (0.1% formic acid in water/acetonitrile, 95%~0) to obtain a white solid of 11.0 mg. MS (ESI) m/z: 408.0[M+H]*. 'H NMR (300 MHz, Chloroform-d) 6 9.73 (br, 1H), 8.33 (d, J = 7.7 Hz, 1H), 8.31 (d, J = 2.5 Hz, 1H), 8.29 (s, 1H), 7.08 (dd, J= 9.4, 2.8 Hz, 1H), 6.33 (d, J = 7.7 Hz, 1H), 5.58 (t, J = 7.4 Hz, 1H), 4.01 - 3.65 (m, 6H), 2.94 (dd, J = 16.4, 8.6 Hz, 1H), 2.62 (dt, J = 13.3, 6.7 Hz, 1H), 2.43 (dt, J = 12.2, 6.0 Hz, 1H), 2.24 (dt, J = 13.9, 7.5 Hz, 1H), 1.96 (dt, J = 13.7, 6.7 Hz, 1H), 1.17(dd, J= 10.3, 5.6 Hz, 1H), 0.87 (dd, J = 10.3, 4.0 Hz,1H), 0.51 (d, J = 6.3 Hz, 2H). Example 2 (1 3E,1 4 E,2 2R)-6-cyclopropylamino-3 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1, -a]pyrimidine-3(3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one
The preparation method of (13 E,1 4E,2 2R)-6-cyclopropylamino-3-fluoro-5-methyl-6,7-di azepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane 8-one was similar to that of Example 1. 'H NMR (300 MHz, Chloroform-d) 6 8.33 (dJ= 9.0 Hz, 1H), 8.31(d, J=6.0 Hz 1H), 8.24(s, 1H), 7.21 (dd,J=9.0,3.0Hz, 0.5H), 7.11 (dd,JJ=9.0,3.0 Hz, 0.5H), 6.33 (d,J= 7.6 Hz, 1H), 5.55 (t, J= 6.0 Hz, 0.5H), 5.48 (t, J=6.0 Hz, 0.5H), 4.17 (m, 1H), 3.97 (m, 1H), 3.78 (m, 1H), 3.64 (m, 1H), 3.41 (m, 1H), 2.57 (ddq, J= 19.1, 9.9, 8.6 Hz, 1H), 2.40 (dd, J= 13.1, 6.7 Hz, 1H), 2.23 (m, 1H), 2.01 (m, 1H), 1.88 (m, 6.3 Hz, 1H), 1.49 (d, J=6.9 Hz, 1.5H), 1.16 (m, 1.5H), 1.00 (m, 1H), 0.88 (m, 1H), 0.70 (m, 1H), 0.43 (m, 1H). MS (ESI) m/z: 422.2[M+H]*. Example 3
(1 3 E,1 4 E,2 2 R,5R)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a
]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
& (1 3 E,1 4 E,2 2 R,5S)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyri midine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
F ) 0 F 0
Step 1: Synthesis of (1 3 E,1 4 E,2 2 R)-6-cyclopropylamino-3 5-fluoro-5-methyl-6,7-diazepin e-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one f ollowing the method of Example 2 Step 2: Preparation of (1 3 E,1 4 E,2 2 R,5R)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine
-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one & (1 3 E,1 4 E,2 2 R,5S)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimi
dine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
N Chuial separation on N (R) Q N HN preparative column HN H HN F H FN + F N IN" N" NN/NNN NNN
Example 3a (or 3b) Example 3b (or 3a) (1 3E,1 4 E,2 2 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1, R)-6-cyclopropylamino-3 -a]pyrimidine-3(3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one (200 mg, 0.47 mmol) was subjected to chiral separation on a preparative column to obtain Example 3a: (1 3 E,1 4 E,2 2 R,5R or S)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,54]pyrimidine-3(3,2)-p yridine-2(1,2)-pyrrolidine cyclooctane-8-one (28.3 mg, yield 28.3%) and Example 3b: (1 3 E,1 4 E,2 2 R,5R or S)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5,3)-pyrazolo(1,5-a]pyrimidine-3(3,2) pyridine-2(1,2)-pyrrolidine cyclooctane-8-one (35.6 mg, yield 35.6%). Separation and preparation method: Instrument: waters SFC200 Chromatographic column: ChiralPak OD, 250x30mm I.D., 5 pm Mobile phase: A: C0 2 ; B: MEOH (0.1% NH H 3 2 0)
Wavelength: 254 nm Column temperature: 38°C Flow rate: 60 g/min Single injection volume: 5 mL Single injection concentration: 10 mg/mL Injection times: 4 Solvent: MeOH Back pressure: 100 bar Gradient condition: B 40% Cycle time: 8 min Collection condition: concentration under reduced pressure at 40°C Separation and detection method: Instrument: waters UPCC Chromatographic column: ChiralPak OD, 2.1 x 150 mm I.D., 3 pm Mobile phase: A: C02; B: MEOH (0.1% DEA) Wavelength: 254 nm
Column temperature: 400 C Flow rate: 1 mL/min Injection volume: 2 pL Injection concentration: 2 mg/mL Solvent: MeOH Back pressure: 1500 psi Gradient condition: B 5%-40% Runtime: 10 min Retention time: 4.471 min, 4.788 min Example 3a: (13 E,1 4 E,2 2 R,5R or S)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5, 3)-pyrazolo(1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one, retention time 4.471 min. MS (ESI) m/z: 422.2 [M+H]*. 1 H NMR (400 MHz, CDC 3) 6 8.63 (br, 1H), 8. 31 (dd, J=23.1, 15.6 Hz, 3H), 7.16 - 7.07 (m, 1H), 6.33 (d, J=.6 Hz, 1H), 5.49 (t, J=17.1 Hz, 1H), 4.16 (t, J= 8.0 Hz ,1H), 4.01 - 3.92 (m, 1H), 3.81 (m, 1H), 3.46 (dd, J= 33.0, 21.6 Hz, 2 H), 3.18 (m, 1H), 2.60 (m, 1H), 2.39 (m, 1H), 2.24 (m, 1H), 1.89 (d,J= 11.6 Hz,1H), 1.29-1.2 1 (d, J=7.6 Hz,3H), 1.07 - 0.93 (m, 2H), 0.74 - 0.66 (m,1H), 0.51-0.42 (m, 1H). Example 3b: (13 E,1 4 E,2 2 R,5R or S)-6-cyclopropyl-3 5-fluoro-5-methyl-6,7-diazepine-1(5, 3)-pyrazolo(1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one, retention time 4.788 min. MS (ESI) m/z: 422.2 [M+H]*. 1 H NMR (400 MHz, CDC 3 ) 6 9.11 (br, 1H), 8. 42 - 8.22 (m, 3H), 7.20 (dJ= 9.3 Hz, 1H), 6.39 - 6.25 (d, J= 7.6 Hz, 1H), 5.56 (t, J= 12 Hz, 1 H), 4.18 (t, J= 8.0 Hz ,1H), 3.98 (s, 1H), 3.86 (d, J= 24.8 Hz, 2H), 2.80 (d, J= 16.3 Hz, 1H), 2.53 (m, 1H), 2.42 (m, 1H), 2.30 (m, 1H), 2.22 (m, 1H), 1.88 (d, J= 11.6 Hz, 1H), 1.57- 1.42 (d, J=7.6Hz, 3H), 1.02 (m, 1H), 0.93-0.85 (m, 1H), 0.44 (m, 2H). Example 4 Synthesis of (R,1 3 E,1 4 E)-3 5-fluoro-6-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimi dine-3(3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one
N N 1H N F N" N _ N-N
Step 1: Synthesis of ethyl (S)-5-(2-(5-fluoro-2-(2-(methylamino)ethyl)pyridin-3-yl)pyrrol idin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate
_0 F\N H 3 C-NH 2 AcOH HN _f N~N 0-Q / ___ __ __ __I_
rN H HN75\""'N" H N N EtOH N F
At room temperature, ethyl(S,E)-5-(2-(5-fluoro-2-(prop-1-en-I-yl)pyridin-3-yl)pyrrolidi n-1-yl)pyrazolo[1,5-a] pyrimidine-3-carboxylate (1.00 g, 2.62 mmol), 30% methylamine in et hanol (30 mL), and glacial acetic acid (10 mL) were added into a 100 mL single-necked flask, evacuated, replaced with nitrogen, slowly warmed to 75°C, and reacted under reflux for 19 h ours. The reaction was stopped. The reaction solution was cooled to room temperature, and E A was added. The reaction solution was washed with a saturated aqueous solution of sodium carbonate. The aqueous phase was back extracted with EA. The organic phases were combine d, dried over anhydrous sodium sulfate, and evaporated to dryness under reduced pressure. Co lumn chromatography (DCM/EtOH system) was performed to obtain a yellow solid of 544.3 g, with a yield of 45.74%. MS (ESI) m/z:413.3[M+H]*. Step 2: Synthesis of ethyl (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-methylhydrazino)ethyl) -5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate
/- - 9 , Boc _0 oc-o S N / C-O N H N N N N THF;5I" N-methylmorpholine rHINTHF -l _N _NHN N F F
At room temperature, ethyl (S)-5-(2-(5-fluoro-2-(2-(methylamino)ethyl)pyridin-3-yl)pyrr olidin-1-yl)pyrazolo[1,5-a ]pyrimidine-3-carboxylate (439.0 mg, 1.04 mmol), tetrahydrofuran (9.00 mL) and N-methylmorpholine (158.0 mg, 1.56 mmol) were added into a 50 mL single-n ecked flask. The temperature was reduced to0°C, and N-Boc-O p-toluenesulfonyl-hydroxyla mine (898.3 mg, 3.12 mmol) was added in portions. After the addition was completed and the temperature was returned to room temperature, the reaction was carried out for 19 hours. The reaction was stopped, and EA was added. The reaction solution was washed with a saturated a queous solution of sodium carbonate. The aqueous phase was extracted with EA. The organic phases were combined, dried over anhydrous Na2SO4, and evaporated to dryness under reduce d pressure. Column chromatography (PE/EA system) was performed to obtain a product of 68. 2 mg. MS (ESI) m/z: 528.3 [M+H]*. Step 3: Synthesis of (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-methylhydrazino)ethyl)-5-fi uoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
At room temperature, ethyl (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-methylhydrazino)eth yl)-5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (62.8 mg, 0. 13 mmol) and ethanol (2.00 mL) were added into a 25 mL single-necked flask. After complet e dissolution, lithium hydroxide monohydrate (32.5 mg, 0.77 mmol) in water (0.5 mL) was ad ded, the temperature was slowly increased to 70°C, and the reaction was carried out with stirri ng for 6 hours, at which the reaction was complete. The reaction solution was cooled to room temperature, and evaporated to dryness under reduced pressure to obtain a crude product 1 as a yellow solid. MS (ESI) m/z: 500.1[M+H]*. Step 4: Synthesis of (R,1 3 E,1 4 E)-3 5-fluoro-6-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a] pyrimidine-3(3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one 0/ OH NNH2 - TFA IN N N 0 TFA 'HO _NN JNN '
N F NN 1
N N 1 0 TEA, HOBt, EDCI, F HN
At room temperature, the above crude product 1 was added into a 25 mL single-necked flask, followed by addition of methylene chloride (2.00 mL) and trifluoroacetic acid (2.00 mL), ultrasonically dissolved, and stirred for 2 hours at room temperature, at which the reaction was complete. The reaction was stopped. The reaction system was evaporated to dryness under reduced pressure to obtain a pale yellow crude product 2. MS (ESI) m/z: 400.5[M+H]*. At room temperature, the above crude product 2 was placed into a 25 single-necked flask, followed by addition of HOBt (87.3 mg, 0.64 mmol), EDCI (123.9 mg, 0.64 mmol), DMF (3.00 mL), and TEA (261.6 mg, 2.58 mmol), evacuated, replaced with nitrogen, and reacted at room temperature overnight, at which the reaction was complete. The reaction system was evaporated to dryness under reduced pressure, and subjected to column chromatography (0.1% formic acid in water/acetonitrile system) to obtain a product of 16.5 mg. MS (ESI) m/z:
382.4[M+H]*. 'H NMR (300 MHz, Chloroform-d) 6 8.35 (d, J= 9.4, 1H), 8.34 (d, 2.8, 1H),
8.31 (s, 1H), 7.10 (dd, J= 9.4,2.8 Hz, 1H), 6.34 (d, J= 7.6 Hz, 1H), 5.54 (t, J= 7.5 Hz, 1H), 4.12 (dd,J= 15.0,6.2 Hz, 1H), 3.99 (dd,J= 7.9,7.2 Hz,1H), 3.86 (dd,J= 8.7,7.8 Hz, 1H), 3.72 -3.69 (m, 1H), 3.67 - 3.65 (m, 1H), 2.87 -2.79(m, 1H), 2.77 (s, 3H), 2.66 - 2.56 (m, 1H), 2.47 2.41 (m, 1H), 2.30 - 2.23 (m, 1H), 1.97 -1.90(m, 1H). Example 5 (R,1 3E,1 4 E)-6-ethyl-3 5-fluoro-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2 )-az abenzene-2(1,2)-pyrrolidine cyclooctane-8-one
Step 1: Synthesis of ethyl (S)-5-(2-(2-(2-(ethylamino)ethyl)-5-fluoropyridin-3-yl)pyrroli din-I-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate
AcOH
F N O H3C NH 2 NF N 0 - ~ ~~EtOH H N4 NJ r N F
At room temperature, ethyl (S)-5-(2-(5-fluoro-2-vinylpyridin-3-yl)pyrrolidin-1-yl)pyrazo lo[1,5 -a]pyrimidine-3-carboxylate (1.52 g, 3.98 mmol), 30% ethylamine in ethanol (40.80 m L), and glacial acetic acid (13.60 mL) were added into a 100 mL single-necked flask, evacuat ed, replaced with nitrogen, slowly warmed to 75°C, and reacted under reflux. After stirring for 23.5 hours, the reaction was stopped. The reaction solution was cooled to room temperature, and EA was added. The reaction solution was washed with a saturated aqueous solution of sod ium carbonate. The aqueous phase was back extracted with EA. The organic phases were com bined, dried over anhydrous sodium sulfate, and evaporated to dryness under reduced pressure. Column chromatography (DCM/EtOH system) was performed to obtain a yellow solid of 610 mg, with a yield of 33.66%. MS (ESI) m/z: 427.5[M+H]*. Step 2: Synthesis of ethyl (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-ethylhydrazino)ethyl) -fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate o Boc OcO QS' N NN'O N N N N-methylmorpholineN N
NH N THE NH F bOe
At room temperature, ethyl (S)-5-(2-(2-(2-(ethylamino)ethyl)-5-fluropyridin-3-yl)pyrroli din-I-yl)pyrazolo[1,5-a ]pyrimidine-3-carboxylate (753.7 mg, 1.77 mmol), tetrahydrofuran (1 mL) and N-methylmorpholine (178.8 mg, 1.77 mmol) were added into a 50 mL single-neck ed flask. The temperature was reduced to0°C, and N-Boc-O p-toluenesulfonyl-hydroxylamin e (2.54 g, 8.84 mmol) was added in portions. After the addition was completed and the temper ature was returned to room temperature, the reaction was carried out for 17 hours. The reactio n was stopped, and EA was added. The reaction solution was washed with a saturated aqueous solution of sodium carbonate. The aqueous phase was extracted with EA. The organic phases were combined, dried over anhydrous Na2SO4, and evaporated to dryness under reduced press ure. Column chromatography (PE/EA system) was performed to obtain a product of 101.6 mg. MS (ESI) m/z: 542.6[M+H]*. Step 3: Synthesis of (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-ethylhydrazino)ethyl)-5-fluo ropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
0 0OH N N N LiHN N 6 ~~ EtOH NHN N N Boc F BOc/N F
At room temperature, ethyl (S)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-ethylhydrazino)ethyl) -5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (101.6 mg, 0.1 9 mmol) and ethanol (4.00 mL) were added into a 25 mL single-necked flask. After complete dissolution, lithium hydroxide monohydrate (47.2 mg, 1.13 mmol) in water (0.8 mL) was add ed, and the temperature was slowly increased to 70°C. After stirring for 5 hours, the reaction was complete. The reaction system was cooled to room temperature, and evaporated to drynes s under reduced pressure to obtain a crude product 1 as a yellow solid. MS (ESI) m/z: 514.5[M +H]*. Step 4: Synthesis of (R,1 3 E,1 4 E)-3 5-fluoro-6-ethyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]p yrimidine-3(3,2 )-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one
OH N NH- TFA N N N H / TFA HO N N- N N NH N' F N-N Boc
N O TEA, HOBt, EDCI F HN
At room temperature, the above crude product 1 was added into a 25 mL single-necked flask, followed by addition of methylene chloride (3.00 mL) and trifluoroacetic acid (3.00 mL), ultrasonically dissolved, and stirred for 1.5 hours at room temperature, at which the reaction was complete. The reaction was stopped. The reaction system was evaporated to dryness under reduced pressure to obtain a pale yellow crude product 2.MS (ESI) m/z: 414.4[M+H]*. At room temperature, the above crude product 2 was placed into a 25 mL single-necked flask, followed by addition of HOBt (126.7 mg, 0.94 mmol), EDCI (180.0 mg, 0.94 mmol), DMF (6.00 mL), and TEA (380.0 mg, 3.75 mmol), evacuated, replaced with nitrogen, and reacted at room temperature overnight, at which the reaction was complete. The reaction system was evaporated to dryness under reduced pressure, and subjected to column chromatography (0.1% formic acid in water/acetonitrile system) to obtain a product of 14.4 mg. MS (ESI) m/z: 396.4 [M+H]*. HPLC: 97.87%. 'H NMR (300 MHz, Chloroform-d) 6 9.42 (br,IH), 8.41 - 8.31 (m, 3H), 7.10 (dd, J= 8.4, 2.8 Hz, 1H), 6.36 (d, J= 7.9 Hz, 1H), 5.57 (t, J=7.5 Hz, 1H), 4.04 - 3.95 (m, 2H), 3.92 - 3.83 (m, 2H), 3.78 - 3.70 (m, 1H), 3.63 (d, J= 17.8 Hz, 1H), 2.98 (q, J= 8.4 Hz, 2H), 2.66 - 2.57 (m, 1H), 2.29 - 2.18 (m, 2H), 1.26 - 1.20 (t, J= 6.0 Hz, 3H). Example 6 Synthesis of (R,1 3 E,1 4 E)-3 5 -fluoro-6-isopropyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyri midine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
N N HkN F _ NN N / N-N
The preparation method of (R,1 3 E,1 4 E)-3 5 -fluoro-6-isopropyl-6,7-diazepine-1(5,3)-pyraz olo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one was similar to that of Example 1. H NMR (400 MHz, CDC 3) 6 9.41 (br, 1H), 8.33 (d, J= 8.0 Hz, 1H), 8.32 (s, 2H), 7.09 (dd, J=9.4, 2.3 Hz, 1H), 6.34 (d, J= 7.9 Hz, 1H), 5.56 (t, J= 7.3 Hz, 1H), 4.20 - 4.14 (in, 1H), 4.00 (q, J= 8.0 Hz, 1H), 3.88 -3.82 (in, 1H), 3.65 (dd, J= 15.4, 4.0 Hz, 1H), 3.56 (d, J= 16.2 Hz, 1H), 3.09 (p, J= 6.2Hz, 1H), 2.86 (dd, J= 15.1, 10.1 Hz, 1H), 2.61 (dd, J= 13.4, 6.8 Hz, 1H), 2.44 (dt, J= 12.7, 6.3 Hz, 1H), 2.25 (dt, J= 13.7, 7.3 Hz, 1H), 1.94 (dd, J= 13.5, 6.8 Hz, 1H), 1.29 (d, J= 6.3 Hz, 3H), 1.22 (d, J= 6.3 Hz, 3H). MS (ESI) m/z: 410.2[M+H]*. Example 7
(1 3 E,1 4 E,2 2 R,5R)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidin
e-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one & (1 3 E,1 4 E,2 2 R,5S)-3 5-fluoro-5,6-di
methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cy clooctane-8-one
N (S) 0 N (R)HN N s HN F HNF
Step 1: Synthesis of(1 3 E,1 4 E,2 2R)-5,6-dimethyl-3 5-fluoro-6,7-diazepine-1(5,3)-pyrazolo
[1,5-a]pyrimidine-3( 3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one following the met hod of Example 2 Step 2: Preparation of (1 3 E,1 4 E,2 2 R,5R)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyr
azolo[1,5-a]pyrirnidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one & (1 3 E,1 4 E,2 2 R,
S)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2 (1,2)-pyrrolidine cyclooctane-8-one
N N/S0 Separation on N N HN preparative column / HN F HN N F N [ N /
Example 7a (or 7b) Example 7b (or 7a) 3 (1 E,1 4 E,2 2R)-5,6-dimethyl-3 5-fluoro-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3( 3,2)-azabenzene-2(1,2)-pyrrolidine cyclooctane-8-one (260 mg, 0.65 mmol) was subjected to separation on a preparative column to obtain Example 7a: (1 3 E,1 4 E,2 2 R,5R or S)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2( 1,2)-pyrrolidine cyclooctane-8-one (23 mg, yield 17.7%) and Example 7b: (1 3 E,1 4 E,2 2 R,5R or S)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(
1,2)-pyrrolidine cyclooctane-8-one (56 mg, yield 43.1%). Separation and preparation method: Instrument: Qingbohua LC2000 High Performance Liquid Chromatograph Chromatographic column: YMC Triart C18 250*20 mm 10 um Mobile phase: A: acetonitrile; mobile phase B: 0.1% trifluoroacetic acid in water Wavelength: 230 nm Column temperature: 35°C Flow rate: 10 ml/min Solvent: acetonitrile Preparation conditions: Omin A25B75 25min A25B75 30min A26B74 35min A28B72 Collection condition: concentration under reduced pressure at 40°C Separation and detection method: Instrument: Agilent 1260 Infinity II Chromatographic column: Xtimate C18 4.6*50 mm 3um Mobile phase: A: acetonitrile; B: 0.1% trifluoroacetic acid in water Wavelength: 230 nm Column temperature: 35°C Flow rate: 1 mL/min Injection volume: 20 L Retention time: 2.371 min, 2.844 min Solvent: acetonitrile Detection condition: B 10%-76% Example 7a: (1 3E,1 4 E,2 2 R,5R or S)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyrazol o[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one, retention time 2.371 min. MS (ESI) m/z: 396.2 [M+H]*. 'H NMR (400 MHz, DMSO-d6) 89.55 (br, 1H), 8.82 (d,
J= 7.7 Hz, 1H), 8.37(m, 1H), 8.11 (s, 1H), 7.54 (d, J= 9.8 Hz, 1H), 6.72 (d, J=7.8 Hz, 1H), 5.
(t, J=6.8 Hz, 1H), 4.20 (m, 1H), 4.08 (q, J=7.5 Hz, 1H), 3.84 (m, 1H), 3.53 - 3.42 (m, 1H), 3.23 (dd, J= 14.5, 10.6 Hz, 1H), 3.04 (s, 3H), 2.62 (dt, J= 12.6, 6.5 Hz, 1H), 2.24 (dt, J= 11. 7, 5.9 Hz, 1H), 2.08 (dq, J= 12.9, 7.4 Hz, 1H), 1.83 -1.72 (m, 1H), 1.31 (d, J=6.9Hz, 3H). Example 7b: (1 3E,1 4 E,2 2 R,5R or S)-3 5-fluoro-5,6-dimethyl-6,7-diazepine-1(5,3)-pyrazol o[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one, retention time 2.844 min. MS (ESI) m/z: 396.2 [M+H]*. 'H NMR (400 MHz, DMSO- d6) 8 9.64 (br, 1H), 8.80 (d,
J= 7.7 Hz, 1H), 8.42 (d, J= 2.6 Hz, 1H), 8.13 (s, 1H), 7.59 (d, J= 12.6 Hz, 1H), 6.69 (d, J= 7. 8 Hz, 1H), 5.61 (t, J= 7.1 Hz, 1H), 4.14 (d, J= 7.2 Hz, 1H), 3.96 (s, 1H), 3.91 (d, J=5.0 Hz, 1 H), 3.88 - 3.75 (in, 2H), 2.65 (s, 3H), 2.59 (s, 1H), 2.31 (dq, J= 11.7, 5.7, 5.1 Hz, 1H), 2.14 1.99 (in, 1H), 1.80 (dq, J= 13.5, 7.1 Hz, 1H), 1.46 (d, J=6.9 Hz, 3H). Example 8
(1 3 E,1 4 E,2 2 R,5R)-3 5 -fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrim
idine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctan-8-one & (1 3 E,1 4 E,2 2 R,5S)-3 5-fluoro-6-et
hyl-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolid ine cyclooctan-8-one
Step 1: Synthesis of (1 3 E,1 4 E,2 2 R)-3-fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyra zolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctan-8-one following the met hod of Example 2. Step 2: Preparation of (1 3E,1 4 E,2 2 R,5R)-3 5-fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)
-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctan-8-one & (1 3 E,1 4 E,
2 2R,5S)-3 5 -fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-p yridine-2(1,2)-pyrrolidine cyclooctan-8-one
Separation on N N N~~R 0,0N~N (S)~ HN preparative column HN HN F N I F N +F N N N-NNN N -/ N N N-N
Example 8a (or 8b) Example 8b (or 8a) (1 3 E,1 4 E,2 2R)-3 5 -fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidin e-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one (320 mg, 0.78 mmol) was subjected to separation on a preparative column to obtain Example 8a: (1 3 E,1 4 E,2 2 R,5R or S)-3 5-fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridin e-2(1,2)-pyrrolidine cyclooctane-8-one (26 mg, yield 16.2%) and Example 8b:
(1 3 E,1 4 E,2 2 R,5R or S)-3 5-fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2)-pyridin e-2(1,2)-pyrrolidine cyclooctane-8-one (53 mg, yield 33.1%).
Separation and preparation method: Instrument: Qingbohua LC2000 High Performance Liquid Chromatograph Chromatographic column: YMC Triart C18 250*20 mm 10 um Mobile phase: A: acetonitrile; mobile phase B: 0.05% trifluoroacetic acid in water Wavelength: 230 nm Column temperature: 35°C Flow rate: 10 ml/min Solvent: acetonitrile Preparation conditions: Omin A33B67 25min A33B67 30min A35B65 Collection condition: concentration under reduced pressure at 40°C Separation and detection method: Instrument: Agilent 1260 Infinity II Chromatographic column: Xtimate C18 4.6*50 mm 3um Mobile phase: A: acetonitrile; B: 0.1% trifluoroacetic acid in water Wavelength: 230 nm Column temperature: 35°C Flow rate: 1 mL/min Injection volume: 20 L Retention time: 1.898 min, 2.369 min Solvent: acetonitrile Detection condition: B10%-72% Example 8a: (1 3E,1 4 E,2 2R,5R or S)-3 5-fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyr azolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one, retention time 1. 898 min. MS (ESI) m/z: 410.1 [M+H]*. 'NMR (400 MHz, DMSO-d6) 6 9.55 (br, 1H), 8.82 (d,
J= 7.7 Hz, 1H), 8.37(m, 1H), 8.11 (s, 1H), 7.54 (d, J= 9.8 Hz, 1H), 6.72 (d, J=7.8 Hz, 1H),
5.40 (t, J=6.8 Hz, 1H), 4.20 (m, 1H), 4.08 (q, J=7.5 Hz, 1H), 3.84 (m, 1H), 3.53 - 3.42 (m, 1 H), 3.23 (dd, J= 14.5, 10.6 Hz, 1H), 3.04 (s, 3H), 2.62 (dt, J= 12.6, 6.5 Hz, 1H), 2.24 (dt, J 11.7, 5.9 Hz, 1H), 2.08 (dq, J= 12.9, 7.4 Hz, 1H), 1.83 -1.72 (m, 1H), 1.04 (m, 6H). Example 8b: (1 3E,1 4 E,2 2 R,5R or S)-3 5-fluoro-6-ethyl-5-methyl-6,7-diazepine-1(5,3)-pyr azolo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one, retention time 2. 369 min. MS (ESI) m/z: 410.1 [M+H]*. 'H NMR (400 MHz, DMSO- d6) 6 9.02 (br, 1H), 8.76 (d, J= 7.7 Hz, 1H), 8.39 (d, J= 2.5 Hz, 1H), 8.06 (s, 1H), 7.56 (dd, J= 10.1, 2.4 Hz, 1H), 6.6 6 (d, J= 7.8 Hz, 1H), 5.59 (s, 1H), 4.22 - 3.94 (m, 1H), 3.90 - 3.73 (m, 2H), 3.68 - 3.59 (m, 1H),
2.90- 2.74 (m, 1H),2.67 (p,J= 8.3,7.5 Hz, 1H), 2.53 (m, 1H),2.48- 2.40 (m, 1H), 2.30(dq, J= 12.0, 6.6 Hz, 1H), 2.07 (dt, J= 13.2, 7.2 Hz, 1H), 1.77 (td, J= 12.9, 6.3 Hz, 1H), 1.44 (d, J =6.9Hz, 3H), 0.98 (t, J= 6.9 Hz, 3H). Example 9 (R,1 3 E,1 4 E)-3 5-fluoro-6-isobutyl-6,7-diazepine-1(5,3)-pyrazolo[1,5-a]pyrimidine-3(3,2) pyridine-2(1,2)-pyrrolidine cyclooctane-8-one
N N 0 HN F
N N / N'~ N-N
The preparation method of (R,1 3E,1 4 E)-3 5 -fluoro-6-isobutyl-6,7-diazepine-1(5,3)-pyrazo lo[1,5-a]pyrimidine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclooctane-8-one was similar to that of Example 1. H NMR (400 MHz, CDC13) 6 9.29 (br, 1H), 8.30 (dd, J= 9.5, 7.2 Hz, 3H), 7.07 (dd, J= 9.4, 2.8 Hz, 1H), 6.32 (d, J= 7.7 Hz, 1H), 5.57 - 5.53 (t, J= 7.3 Hz, 1H), 3.99 - 3.91 (m, 2H), 3.87 - 3.80 (m, 2H), 3.63 (dt, J= 16.0,3.5 Hz, 1H), 2.86 - 2.76 (m, 2H), 2.65 (dt, J= 13.3, 6.8 Hz, 1H), 2.54 (dd, J= 11.8, 8.4 Hz, 1H), 2.43 (dt, J= 12.6, 6.2 Hz, 1H), 2.25 (dt, J= 13.5, 7.5 Hz, 1H), 1.97 -1.88 (dt, J= 14.2, 7.2 Hz, 1H), 1.82 (dt, J= 13.6, 6.6 Hz, 1H), 1.12 (d, J= 6.5 Hz, 3H), 0.96 (d, J=6.7 Hz, 3H). MS (ESI) m/z: 424.2[M+H]*. Example 10 Synthesis of (R,1 3 E,1 4 E)-6-cyclopropyl-3 5-fluoro-6,7-diaza-1(5,3)-pyrazoline[1,5-a]pyri midine-3(3,2)-pyridine-2(1,2)-pyrrolidine cyclotridecane-8-one
Step 1: 2-(2-bromo-4-fluorophenyl)ethanol
F Br BH3.THF F Br
OH O OH 2-(2-bromo-4-fluorophenyl)acetic acid (46.63 g, 200.00 mmol) was dissolved in 500 mL of THF, and borane in tetrahydrofuran (1.0 M, 300 mL) was added at 0°C. The reaction was carried out for 16 h at 18°C and stopped. The reaction solution was quenched with 1 N diluted hydrochloric acid, and extracted with EA. The organic phase was washed with saturated brine, dried over anhydrous Na2SO4, filtered and concentrated to obtain a yellow oil of 42.57 g, with a yield of 97%. Step2:2-bromo-4-fluoro-1-(2-(4-methoxybenzyloxy)ethyl)benzene F Br PMBCI F Br 60 or OH 50°C At room temperature, NaH (4.10 g, 102.00 mmol) and 200 mL of THF were added into a four-necked flask. 2-(2-bromo-4-fluorophenyl)ethano (14.90 g, 102.00 mmol) was added at °C. The reaction was carried out at 0°C for 0.5 h and tetrabutylammonium iodide (36.28 g, 96.00 mmol) and p-methoxybenzyl chloride (12.78 g, 82.00 mmol) were added. The reaction was carried out for 4 h at 500 C and stopped. The reaction solution was quenched with 1 N diluted hydrochloric acid, and extracted with EA. The organic phase was washed with saturated brine, dried over anhydrous Na2SO4, filtered and concentrated to obtain a colorless oil of 15.37 g, with a yield of 67%. Step 3: 5-fluoro-2-(2-(4-methoxybenzyloxy)ethyl) benzaldehyde
F Br F z O O I ~~7800 At room temperature, 2-bromo-4-fluoro-1-(2-(4-methoxybenzyloxy)ethyl)benzene (15.37 g, 45.50 mmol) was dissolved in THF (500 mL). Under the protection of N2, sec-butyllithium (70 mL) was added at -78°C and stirred at -78 0C for 1 h. Then, DMF (18.17 g, 230.00 mmol) was added. The reaction was carried out for 0.5 h while controlling the temperature at -78 0C, and stopped. The reaction solution was quenched with a saturated ammonium chloride solution. It was extracted with EA. The organic phase was washed with water, dried over anhydrous MgS04, filtered, concentrated, and purified by column chromatography (EA/PE system), to obtain a yellow oil of 8.01 g, with a yield of 62%. Step4:(R,E)-N-(5-fluoro-2-(4-methoxybenzyloxy)ethyl)benzylidene)-2-tert-butyl-2-sulf onimide
S' F O O<SNH 2 OPMB H F 0 ~0, 25CI
At room temperature, 5-fluoro-2-(2-(4-methoxybenzyloxy)ethyl)benzaldehyde (8.00 g, 28.00 mmol), R-tert-butylsulfinamide (3.56 g, 30.00 mmol), Cs2CO3 (6.33 g, 19.00 mmol), and 100 mL of DCM were sequentially added into a single-necked flask. The reaction was carried out under the protection of N2 at 250 C for 16 h, and stopped. The reaction solution was poured into water, and separated. The organic phase was washed with saturated brine, dried over anhydrous MgSO4, filtered, and concentrated to obtain a yellow oil of 10.88 g, with a yield of 100%. Step5:N-((R)-3-((1,3-dioxan-2-yl)-1-(5-fluoro-2-(2-(4-methoxybenzyloxy)ethyl)phenyl) propyl)-2-tert-butyl-2-sulfonimide
0~ 0 0
OPMB 0 MgBr 0
F V_________ I N'S H 1 -30 °C
At room temperature, Mg powder (0.87 g, 36.00 mmol), 1-bromo-3,3-dimethoxypropane (7.10 g, 36.00 mmol) and THF (100 mL) were sequentially added into a four-necked flask, evacuated, and replaced with N2. Under the protection of N2, the reaction was initiated by heating, and the reaction was carried out at 25°C for 2 h. (R,E)-N-(5-fluoro-2-(4-methoxybenzyloxy)ethyl)methylene)-2-tert-butyl-2-sulfonimide (10.88 g, 28.00 mmol) in THF (40 mL) was added dropwise in an ice bath. After the addition, the temperature was increased to 25°C, and the reaction was carried out for 2 h and stopped. A saturated NH 4 C1 solution was added in an ice bath to quench the reaction. Layers were separated. The aqueous phase was extracted with EA. The organic phases were combined, dried over anhydrous MgSO4, filtered and concentrated to obtain a white solid of 14.20 g, with a yield of 100%. Step6:(R)-2-(2-(3,4-dihydro-2H-pyrrol-2-yl)-4-fluoro)phenethylalcohol
0 0 0 F TFA F N H> 17° C OH OPMB
At room temperature, (S)-N-((R)-3-((1,3-dioxan-2-yl)-1-(5-fluoro-2-(2-(4-methoxybenzy loxy)ethyl)phenyl)propyl)-2-tert-butyl-2-sulfonimide (14.20 g, 28.00 mmol) and H 2 0 (25 mL) were sequentially added into a single-necked flask. TFA (100 mL) was added dropwise in an ice bath. After the addition, the reaction was carried out with stirring for 20 min. The temperat ure was raised to 25°C, and the reaction was carried out for 22 h and stopped. The reaction sol ution was directly used in the next step.
Step7:(R)-2-(4-fluoro-2-(pyrrolidin-2-yl)phenethylalcohol
F HSiEt 3 F OH
OH 17 00 O
Atroomtemperature,(R)-2-(2-(3,4-dihydro-2H-pyrrol-2-yl)-4-fluoro)phenethylalcohol (the reaction solution from the previous step) was added into a single-necked flask. Triethylsilane (9.77 g, 84.00 mmol) was added in portions in an ice salt bath. After the addition, the temperature was raised to 17°C and the reaction was carried out for 1 h. A 2N HCl aqueous solution was added to quench the reaction and adjust the system to a pH of 2-3. The system was washed with EA, adjusted to a pH of 9-10 with a IN NaOH aqueous solution, and extracted with DCM. The organic phase was dried over anhydrous Na2SO4, filtered, and concentrated to obtain a pale yellow oil of 3.80 g, with a total yield over two steps of 65%. Step 8: ethyl (R)-5-(2-(5-fluoro-2-(2-hydroxyethyl)phenyl)pyrrol-1-yl)pyrazoline[1,5-a]p yrimidine-3-carboxylate
C F N N F NN C-0 J H OH
24 °C OH N
At room temperature, (R)-2-(4-fluoro-2-(pyrrolidin-2-yl)phenethyl alcohol (3.80 g, 18.00 mmol), ethyl 5-chloropyrazolo[1,5-A]pyrimidine-3-carboxylate (4.10 g, 18.00 mmol), TEA (3.64 g, 36.00 mmol), and EtOH (50 mL) were sequentially added into a single-necked flask, evacuated, and replaced with N2. Under the protection of N2, the reaction was carried out for 16 h at 24°C and stopped. Ethanol was removed by rotary evaporation, and DCM and water were added. The reaction solution was stirred and separated. The aqueous phase was removed. The organic phase was washed with saturated brine and a saturated aqueous NaHCO 3solution, dried over anhydrous Na2SO4, filtered, concentrated, and purified by column chromatography (EA/PE system) to obtain a yellow foamy solid of 3.56 g, with a yield of 50%. Step 9: ethyl (R)-5-(2-(5-fluoro-2-(2-methylsulfonyl)ethyl)phenyl)pyrrol-1-yl)pyrazoline
[1,5-a]pyrimidine-3-carboxylate
F 0NF N_ I~ N 0-0 MsCI I ~ OMs N OH N At room temperature, ethyl (R)-5-(2-(5-fluoro-2-(2-hydroxyethyl)phenyl)pyrrol-1-yl)pyr azoline[1,5-a]pyrimidine-3-carboxylate (2.00 g, 5.02 mmol), TEA (1.52 g, 15.06 mmol) and 5 mL of DCM were sequentially added into a single-necked flask, and methanesulfonyl chlori de (1.16 g, 10.04 mmol) was added in an ice bath. The temperature was naturally increased to 26°C, and the reaction was carried out for 2 h and stopped. The reaction solution was poured i nto water, stirred, extracted, and separated. The organic phase was dried over anhydrous Na2S 04, filtered, and concentrated to obtain a yellow liquid. The crude product was directly used i n the next step, with a yield of 100%. Step 10: ethyl (R)-5-(2-(2-(2(cyclopropylamino)ethyl)-5-fluorophenyl)pyrrol-1-yl)pyraz oline[1,5-a]pyrimidine-3-carboxylate
0 F N >NN N N N
N 80°C NH 14 OMs NF
At room temperature, ethyl (R)-5-(2-(5-fluoro-2-(2-methylsulfonyl)ethyl)phenyl)pyrrol 1-yl)pyrazoline[1,5-a]pyrimidine-3-carboxylate (the crude product from the previous step, 5.0 2 mmol), cyclopropylamine (0.86 g, 15.06 mmol) and DMF (30 mL) were sequentially added into a single-necked flask. Under the protection of N2, the reaction was carried out at 80°C for 3 h and stopped. The reaction solution was poured into water, and EA was added for extracti on. The EA phase was washed with IN diluted hydrochloric acid. The aqueous phase was add ed with sodium carbonate to adjust to PH=12. EA was added for extraction. The organic phas e was washed with saturated brine, dried over anhydrous Na2SO4, filtered, and concentrated t o obtain a pale yellow liquid of 1.69 g, with a yield of 77%. Step 11: Synthesis of ethyl (R)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazin o)ethyl)-5-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate
o c
N N N NH " ) N /4 Bar______ N '
N F 21NC H F Boc
At room temperature, ethyl (R)-5-(2-(2-(2(cyclopropylamino)ethyl)-5-fluorophenyl)pyrr ol-1-yl)pyrazoline[1,5-a]pyrimidine-3-carboxylate (1.67 g, 3.82 mmol), N-tert-butoxycarbony 1-3-(4-cyanophenyl) oxaziridine (1.25 g, 4.97 mmol) and DMF (25 mL) were sequentially add ed into a single-necked flask. The reaction was carried out for 16 h at 21°C and stopped. EA was added, and the reaction solution was washed with water. The aqueous phase was back ext racted with EA. The organic phases were combined, dried over anhydrous Na2SO4, filtered, a nd concentrated. Column chromatography (PE/EA system) was performed to obtain a yellow oily solid of 1.02 g, with a yield of 68%. Step12:Synthesisof(R)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazino)ethy l)-5-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylicacid
_0 0 H c-O ~c-OH NarOH NN 7 OC N N N WNN N ..N F NH Boc F F At room temperature, ethyl (R)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazin o)ethyl)-5-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (0.70 g, 1.3 4 mmol) and ethanol (10 mL) were sequentially added into a single-necked flask and stirred t o be completely dissolved. Then, a solution of sodium hydroxide (0.32 g, 8.04 mmol) in water (5 mL) was added. The temperature was raised to 70°C, and the reaction was carried out for 16 h and stopped. It was cooled to room temperature, concentrated to remove most of ethanol, and adjusted to a pH of 3-4 by adding DCM, H2 0 and 1 N HCl, and layers were separated aft er stirring. The aqueous phase was again extracted with DCM. The organic phases were comb ined, dried over anhydrous Mg2SO4, filtered and concentrated to obtain a white solid of 0.63 g, with a yield of 95%. Step 13: (R)-5-(2-(2-(2-(1-cyclopropylhydrazino)ethyl)-5-fluorophenyl)pyrrolidin-1-yl)p yrazolo[1,5-a]pyrimidine-3-carboxylic acid
0 0 N OH 0,-O NN
N 1 N4 32 C NN I F H2 F Boc
At room temperature, (R)-5-(2-(2-(2-(2-(tert-butylcarbonyl)-1-cyclopropylhydrazino)eth yl)-5-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (0.63 g, 1.20 mmol) and a solution of HCl in ethanol (10 mL) were added to a single-necked flask, and stirr ed to be completely dissolved. The reaction was carried out at 32°C for 1 h and stopped. The r eaction system was concentrated to dryness under reduced pressure to obtain a pale yellow sol id of 0.60 g, with a yield of 100%. Step 14: (R,1 3 E, 14E)-6-cyclopropyl-3 5-fluoro-6,7-diaza-1(5,3)-pyrazoline[1,5-a]pyrimidi ne-3(3,2)-phenyl-2(1,2)-pyrrolidine cyclotridecane-8-one
At room temperature, TBTU (0.68 g, 2.12 mmol), DMAP (0.034 g, 0.30 mmol), DMF (6 mL), and DCM (30 mL) were sequentially added to a four-necked flask, evacuated, and repal ced with N 2 . Under the protection of N 2, DIEA (1.09 g, 8.46 mmol) was added. (R)-5-(2-(2-(2 -(1-cyclopropylhydrazino)ethyl)-5-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3 -carboxylic acid (0.60 g, 1.41 mmol) was dissolved with a mixed solution of DMF (6 mL) and DCM (6 mL) to form a clear solution. The clear solution was divided into five equal parts. On e aliquot of the above-mentioned solution was added at 32°C every 1 h. After the completion of the addition, the reaction was carried out at 32°C for 1 h and stopped. The reaction system was concentrated to dryness under reduced pressure, and purified by column chromatography (DCM/CH 30H system) to obtain an off-white solid of 0.22 g, with a yield of 42%. 'H NMR (4
MHz, Chloroform-d) 69.85 (br, 1H), 8.30 (d, J= 9.3 Hz, 2H), 7.20 (m, 1H), 6.90 (t, J= 8.0
Hz, 1H), 6.78 (d, J= 10.2 Hz, 1H), 6.33 (d, J= 7.7 Hz, 1H), 5.67 (t, J= 6.6 Hz, 1H), 3.99 (dt, J = 14.0, 7.9 Hz, 2H), 3.90 - 3.72 (m, 1H), 3.65 - 3.50 (m, 2H), 2.94 - 2.88 (m, 1H), 2.67 -2.50 (m, 2H), 2.50 - 2.33 (m, 1H), 2.21 (dt, J= 13.3, 7.0 Hz, 1H), 1.93 (dt, J= 12.7, 6.5 Hz, 1H), 1.14 (m, 1H), 0.90 (d, J= 10.2 Hz, 1H), 0.54 (m, 2H). MS (ESI) m/z: 407 [M+H]*.
Example 11 Inhibitory activity test for Trk kinases In this experiment, the y- 33 P-ATP isotope test was used to test the inhibition effect of a compound on kinases TrkA, TrkB and TrkC, and the half maximal inhibitory concentration IC 5 o of the inhibitory activity of the compound on the enzymes was obtained. The Trk inhibitor LOXO-101 reported in the literature was used as a positive control, and LOXO-101 was purchased from Shanghai Sinochemtech Co., Ltd., under lot number: SCT0142170801. 1. Basic reaction buffer 20 mM Hepes (pH 7.5), 10 mM MgCl2, 1 mM EGTA, 0.02% Brij35, 0.02 mg/ml BSA, 0.1 mM Na3VO 4,2 mM DTT, 1% DMSO. 2. Formulation of compounds A compound was dissolved in 100% DMSO to a particular concentration, and then the resulting solution was gradient-diluted by an automatic loading device to different concentrations of the test samples (DMSO dissolving solutions). 3. Reaction procedure 3.1. The reaction substrate was diluted using the base reaction buffer; 3.2. The kinase was added into the substrate solution and mixed gently and uniformly;
3.3. The compounds of different concentrations diluted in 100% DMSO were added into the kinase solution using an automatic loading system, and incubated for 20 min at room temperature; 3.4. 3 3P-ATP (10 M, 10 [Ci/t) was added at room temperature to initiate the kinase reaction, and the reaction was carried out for 2 h. 4. Detection The reaction solution was subjected to an ion exchange filtration system to remove unreacted ATP and the generated ADP ions during the reaction. Then, the radiometric quantity of 33 P isotope in the substrate was detected. 5. Data processing The kinase activity in the system with the addition of the inhibitors of different concentrations was calculated from the radiometric quantity, to obtain the inhibitory effect of the compounds with different concentrations on the kinase activity. Fitting was performed using graphpad prism to obtainIC5 ovalues of the compounds for inhibition. The biochemical activity of the compounds of the present invention was determined by the above experiment, and the measuredIC 5 ovalues are shown in table 1: Table 1 Test results of inhibitory activity for Trk kinases Kinase Compound (nM) IC 5 0 TrkA TrkB TrkC Example 1 4.23 0.57 0.25 Example 2 3.81 - Example 3a 2.27 1.58 0.46 Example 3b 2.16 1.13 0.38 Example 4 12.6 - Example 5 7.92 - Example 6 2.09 0.83 0.29 Example 7a 3.20 4.04 0.58 Example 7b 2.62 0.71 0.19 Example 8a 4.01 6.19 0.76 Example 8b 1.85 1.35 0.34 Example 9 2.36 2.16 0.32 LOXO-101 5.58 1.10 0.67 Note: "-" in the table indicates not tested. F OH F N N
larotrectinib LOXO-101
Conclusion: The compounds of the present invention have better inhibitory activity for
Trk kinases than the positive control. Example 12 Growth inhibition test for tel-NTRK1-BaF3 and BaF3-LMNA-NTRIK1 cells In this experiment, the CellTiter-Glo cell proliferation fluorescence assay was used to test the growth inhibitory effect of a compound on tel-NTRK1-BaF3 and BaF3-LMNA-NTRK transgenic cells, and the half maximal growth inhibitory concentration GIso of the compound on the cells was obtained. Trk inhibitor LOXO-101 reported in the literature was used as a positive control, and LOXO-101 was purchased from HaoyuanChemexpress Co., Ltd. 1. Experimental Instruments and consumables I) PreceDo target equivalent gene stable cell line library; II) CellTiter-Glo cell proliferation fluorescence assay reagent (Promega, USA); III) Special 96-well plate for drug screening (Coming, Rochester, NY); IV) Compounds for testing. 2. Preparation of compound plates A compound to be tested was dissolved in DMSO to formulate 10 mM of a mother solution. The mother solution was 3x diluted to 10 mM,3.333 mM, 1.111 mM, 0.370 mM, 0.123 mM, 0.041 mM, 0.014 mM, 0.005 mM, and 0.002 mM. The prepared solutions were each stored in a 0.5 ml sterilized dorft tube (Corning, USA). In addition, an equal volume of DMSO solvent was used as a blank control. With 10 concentration gradients, the plate was stored in vacuum at -20°C. 3. Cell culture conditions The tel-NTRK1-BaF3 and BaF3-LMNA-NTRK1 cell lines were cultured with RPMI 1640 (Corning, NY, USA)+ 10% fetal bovine serum (Gibico, Invitrogen, USA). After the cells were thawed, they were cultured for two generations to be tested. 4. Testing and data processing Logarithmic growth phase cells (2000-2500 cells/well) were inoculated in a 12x8 96-well white opaque cell culture plate (Coming 3570, NY, USA) in a volume of 100 pL per well, and a drug was added to the cell plate (0.1 L/well) at the final concentration of the compound of 10 ptM, 3.3 M, 1.1 M, 0.37 M, 0.12 M, 0.04 M, 0.014 M, 0.005 jM, and 0.002 M (0.4 uL of the drug solution was added to 400 ul of the cell homogenate, and then mixed uniformly, and the resulting mixture was added at 100 ul per well). The plate was incubated at 37°C in a 5% C02 incubator for 72 hours, and then 20 L CellTiter-Glo cell proliferation fluorescence assay reagent was added. The plate was allowed to stand for 10 min, and read in the Envision Plate-Reader.
5. Experimental verification A vehicle group (only DMSO added) was used as a negative control in the plates. 6. Results A corresponding fluorescence value RLU of each well was obtained by reading in the Envision Plate-reader. Raw data RLUDrug for the compounds to be tested were normalized to the RLUDugfor the DMSO control group: Cell Viability%= (RLUDrag/RLUDMso)*100% Nonlinear regression curve fitting was performed for the cell inhibition value of a single concentration of the compound to be tested by using Graph Pad Prism version 6.0, to obtain the Gl5ovalues. 7. Basic reaction buffer 20 mM Hepes (pH 7.5), 10 mM MgC2, 1 mM EGTA, 0.02% mg/ml BSA, 0.1 mM Na3VO4, 2 mM DTT, 1% DMSO. The biochemical activity of the compounds of the present invention was determined by the above experiment, and the measured GIsovalues are shown in table 2: Table 2 Test results of inhibitory activity for TRK fusion cell lines Compound Cell G1so (nM) Compound BaF3-tel-NTRK1 BaF3-LMNA-NTRKI Example 1 12.0 15.1 Example 2 18.0 LOXO-101 24.6 35.7 Note: "-" in the table indicates not tested. Conclusion: The compounds of the present invention have better growth inhibitory activity for TRK fusion cell lines than the positive control. Example 13 Testing on metabolic stability of compounds in human liver microsomes The total volume of an incubation system was 250 [L, and 50 mmol/L PBS buffer (pH=7.4) was used to prepare incubation solutions of liver microsomes from various species with a protein concentration of 0.5 mg/mL. Before the start of the incubation, 2.5 L of a 100
[mol/L compound to be tested was mixed with 197.5 L of the above incubation solution, pre-incubated in a 37°C water bath for 5 min, and then added with a 50 L reducing coenzyme II solution (5 mmol/L) that was likewise pre-incubated for 5 min to start the reaction (in the reaction system, the protein content of liver microsomes from various species was 0.5 g/L, and the final concentration of the compound to be tested was 1 mol/L), incubated in a 37°C water bath with shaking, and taken out at 0, 5, 15, 30, and and 60 min. 600 L of a methanol solution of mixed positive and negative internal standards with internal standards Terfenadine (positive ion internal standard, 25 ng/mL) and Tolbutamide (negative ion internal standard, 50 ng/mL) was immediately added to terminate the reaction. The incubation solution after termination was shaken for 2 min and centrifuged (4°C, 16000 r/min) for 10 min, and the supernatant was taken for LC-MS/MS detection to quantitatively analyze the remaining amount of the parent drug. (DMSO<0.1%). The concentration of the compound at 0 min incubation was regarded as 100%, and the concentrations at other incubation time points were converted into the remaining percentages. The natural logarithm of the remaining percentage at each time point was linearly regressed against the incubation time, and the slope k was calculated. According to the formula T1 /2 = -0.693/k, the in vitro half-life was calculated. Clearance in liver microsomes (CLint (pL/min/mg protein) = Ln (2)* 1000 /T/2 (min)/ Protein Conc(mg/ml)). Test data of metabolic stability of the compounds of the present invention in human liver microsomes are listed in detail in table 3: Table 3 Test results of metabolic stability in human liver microsomes Results of metabolic stability of tested substances in human liver microsomes Tested substance Remaining %(60 T/2 Clint Negativecontrol No.min (mn) ( tLmin/mg Remaining
% protein) (60 min) Example 1 52.26 66.6 20.8 98.1 Example 4 88.39 217.0 6.40 108.0 LOXO-101 47.78 59.2 23.4 95.9 LOXO-195 6.70 15.3 90.6 102 Note: Trk inhibitor LOXO-195 was prepared with reference to the method of patent W02011146336. Conclusion: Compared with the control compound, the compounds of the present invention have better metabolic stability in human liver microsomes and better druggability than the positive control drug.
Claims (14)
- CLAIMS 1. A compound represented by formula (I), stereoisomer thereof or pharmaceutically acceptable salt thereof: 2 4 R RY 0 H R3-- " I NN / N-N(I) wherein R' is selected from H, Ci-C alkyl, C3-C cycloalkyl, C2-C alkenyl, C2-C alkynyl, -COR 5, -S02 R 5 or -SOR 5, and optionally further substituted with one or more 6 8 substituents selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR R , -NR6COR7, -COR 7, -S02 R 7, -SOR 7 , Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C alkyl, C3-C cycloalkyl, C2-C alkenyl or C2-C8 alkynyl, and optionally further substituted with one or more substituents 6 8 selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR R , -NR 6COR5 , -COR5 , -S0 2 R5, -SOR 5, Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R5 and R 7 are each independently selected from H, Ci-C8 alkyl, C3-C cycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, CI-C8 alkyl, or C3-C cycloalkyl; Y is -(CH 2 )n- or -O(CH2)n-; n is selected from 0, 1, 2 or 3; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group, or a 4-10 membered heterocyclic group; R3 is selected from H, deuterium, halogen, cyano, nitro, C1-C alkyl, C3-C8 cycloalkyl, orC1-C8 alkoxy; and X is selected from CH or N.
- 2. The compound of general formula (I), stereoisomer thereof or pharmaceutically accepted salt thereof according to claim 1, which is a compound of general formula (II), stereoisomer thereof or pharmaceutically acceptable salt thereof:R2 R1 xs N \0 / HN R3N N / N-N(11) wherein R' is selected from H, Ci-C alkyl, C3-C cycloalkyl, C2-C alkenyl, C2-C alkynyl, -COR 5, -S02 R 5 or -SOR 5, and optionally further substituted with one or more 6 8 substituents selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR R , -NR6COR7, -COR 7, -S02 R 7, -SOR 7 , Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C alkyl, C3-C cycloalkyl, C2-C alkenyl or C2-C8 alkynyl, and optionally further substituted with one or more substituents 6 8 selected from deuterium, halogen, hydroxyl, cyano, nitro, -NR R , -NR 6COR5 , -COR5 , -S0 2 R5, -SOR 5, Ci-C8 alkyl, C3-C8 cycloalkyl, CI- C8 alkoxy, or a 4-10 membered heterocyclic group; R5 and R 7 are each independently selected from H, Ci-C8 alkyl, C3-C cycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is selected from H, deuterium, halogen, cyano, nitro, C-C alkyl, C3-C8 cycloalkyl, orCI-C8 alkoxy; and X is selected from CH or N.
- 3. The compound according to claim 2, wherein: R' is selected from H, Ci-C alkyl, C3-C8 cycloalkyl, C2-C8 alkenyl or C2-C8 alkynyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -NR6 R8 , -NR 6COR 7 , -COR7 , -S0 2 R7 , -SOR 7 , Ci-C8 alkyl, C3-C8 cycloalkyl, CI-C8 alkoxy, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C alkyl, C3-C cycloalkyl, C2-C alkenyl or C2-C8 alkynyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -NR6 R8 , -NRCOR , -COR , -S0 2 R5 ,-SOR 5, Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R5 and R 7 are each independently selected from H, Ci-C8 alkyl, C3-C cycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is halogen; andX is selected from CH or N.
- 4. The compound according to claim 3, wherein: R' is selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted 6 R with one or more selected from deuterium, halogen, hydroxyl, cyano, -NR 8 , -NR6 COR7 ,-COR 7, -S02 R 7, -SOR 7 , Ci-C8 alkyl, C3-C8 cycloalkyl, Ci-C8 alkoxy, or a 4-10 membered heterocyclic group; R2 and R4 are each independently selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -NR6 R8 , -NR 6COR', -COR', -S0 2 R5 , -SOR5 , Ci-C8 alkyl, C3-C8 cycloalkyl, CI-C8 alkoxy, or a 4-10 membered heterocyclic group; R5 and R 7 are each independently selected from H, Ci-C8 alkyl, C3-C cycloalkyl, or -NR8 ; R6 and R8 are each independently selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is halogen; and X is CH or N.
- 5. The compound according to claim 4, wherein: R' is selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, -S 2 R7, C 1-C 4 alkyl, C3-C 6 cycloalkyl or C1 -C 4 alkoxy; R7 is selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; R2 and R4 are each independently selected from H, Ci-C8 alkyl or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, halogen, hydroxyl, cyano, C1 -C 4 alkyl, C3-C 6 cycloalkyl, or C1 -C 4 alkoxy; alternatively, any two of R, R2 and R4 can independently form a C3-C cycloalkyl group or a 4-10 membered heterocyclic group; R3 is halogen; and X is selected from CH or N.
- 6. The compound according to claim 5, wherein: R' is selected from H, Ci-C8 alkyl, or C3-C8 cycloalkyl, and optionally further substituted with one or more substituents selected from deuterium, hydroxyl, halogen, -S0 2 R 7 , or C1-C4 alkoxy; R7 is selected from H or Ci-C8 alkyl; R2 and R4 are each independently selected from H, Ci-C8 alkyl, or C3-C cycloalkyl; alternatively, any two of R, R2 and R4 can independently form a 4-10 membered heterocyclic group; R3 is selected from fluorine or chlorine; and X is selected from CH or N.
- 7. The compound according to claim 6, wherein: R' is selected from H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl, and optionally further substituted with one or more substituents selected from deuterium, hydroxyl, F, Cl, -SO 2 CH 3 , or methoxy; R2 and R4 are each independently selected from H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl; alternatively, any two of R, R2 and R4 can independently form a morpholinyl; R3 is selected from fluorine or chlorine; andX is selected from CH or N.
- 8. A compound, stereoisomer thereof or pharmaceutically acceptable salt thereof, selected from the following structures:N NANO N~A H N H HN /" HN F(K N F N F N IN~ N N / N-N N / N-N N / N-NN (RN o N_ N NS)N HN HN AH NI _C 1N / N-N N / N-N N / N-NN N N N N\ oR!0 0 F -F " HIN -F HN I H( N (K I - N (", NNN- N(S)~ IRN 0oN (SJ 0 I"HNI HIN I F -F N F N N N-N N N-N N / N-N0N 0N S)! 0 N (R)! 0 HN N HN CN /N-N N / WN N NA0 0 D DDHSIN'J(R0 0 N DO0FF H H'N: NN // N N0 D- N'DDN 1 0 N (R)r'N 0o\ () 0 N HN: HN H\ HN N AN/ N (R) N0 N(-N /NN\ HN0 /\ HN I NY NN NN / N-N N -NFFN N N N N N N H HN HN F N N N F N F \ N N-N N N-N N N-NFj FN-N N N-N N-N H HN0 F NY -iAN F o\:N N /N-N F NJ N-N
- 9.Acompound,stereoisomerthereoforpharmaceutically acceptable salt thereof, selected from the following structures:`N 0 N 0S N N 0 _NY I S HN H HN/ HN: F - F -FI ~ -N N- 1 N~N-N N N-N N~N-NN 0R) N NSr~ 0 N 'NF /" -F )HN- 0 _r _I" HN F N" HN N~N / NN-N N-NN NIN N N 0RN -N I N HN HN H HN F -F F FN~N-N N N-N N~N-NSN N (R)N _NY I N I" HN 0 INY() H F -F -FN 1 ,N 1 N 1 N~N-N N N-N N~N-NN N a
- 10. Apharmaceutical composition comprising the compound, stereoisomer thereof or pharmaceutically acceptable salt thereof according to any one of claims 1-9, and a pharmaceutically acceptable carrier.
- 11. The pharmaceutical composition according to claim 10, wherein the pharmaceutical composition is a capsule, powder, tablet, granule, pill, injection, syrup, oral liquid, inhalant, ointment, suppository, or patch.
- 12. Use of the compound, stereoisomer thereof or pharmaceutically acceptable salt thereof according to any one of claims 1-9, or the pharmaceutical composition according to claims 10-11 in the preparation of a medicament for preventing or treating tropomyosin receptor kinase activity mediated diseases.
- 13. Use of the compound, stereoisomer thereof or pharmaceutically acceptable salt thereof according to any one of claims 1-9, or the pharmaceutical composition according to claims 10-11 in the preparation of a medicament for preventing or treating pain, inflammation, and cancer.
- 14. The use according to claim 13, wherein the cancer is selected from neuroblastoma, ovarian cancer, cervical cancer, colorectal cancer, breast cancer, pancreatic cancer, glioma, glioblastoma, melanoma, prostate cancer, leukemia, lymphoma, non-Hodgkin's lymphoma, gastric cancer, lung cancer, hepatocellular carcinoma, gastrointestinal stromal tumor, thyroid cancer, cholangiocarcinoma, endometrial cancer, renal cancer, anaplastic large cell lymphoma, acute myelocytic leukemia, multiple myeloma, melanoma or mesothelioma, juvenile sarcoma, fibrosarcoma, large cell neuroendocrine carcinoma, pilocytic astrocytoma, head and neck squamous cell carcinoma, congenital mesoblastic nephroma, ductal adenocarcinoma, mammary analogue secretory carcinoma, and appendix cancer.
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